No. I did have both at one point and couldn't change that option.
Im guessing since I uninstalled BB maps, that option has disappeared.
So perhaps as google maps is the only one installed, it may default to that?

__________________
~Midnight Draven

"That's it then. Cancel the kitchen scraps for lepers and orphans, no more merciful beheadings... and call off Christmas."

I suspect Advanced -> Maps is an options screen for BBMaps that introduces the possibility of the application using different source data at some point in the future. But that is just a WAG based on the fact that the option matches the LbsConfig service book name.